|Synthetic Diamonds -- Groks Science Show 2008-08-06 - Charles Lee and Frank Ling|
While most diamonds in the world are mined from natural sources, technological advances are now making synthetic diamonds a viable alternative. On this program, Ulrich Boser discussed the world of synthetic diamonds.
Keywords: science; diamonds; carbon; synthesis
|Carbon Taxes -- Groks Science Show 2007-05-02 - Charles Lee and Frank Ling|
What is the appropriate market mechanism for moving away from a fossil fuel economy? On this program, Lester Brown from the Earth Policy Institute discussed how carbon taxes could better represent the true cost of energy.
Keywords: science; sustainability; environment; carbon tax
|Anthropogenic Peat -- Groks Science Show 2007-03-07 - Charles Lee and Frank Ling|
Scientists estimate that one-third of today's increase in greenhouse gas emissions come from changes in the land-use. One way to sequester the carbon emissions is plant more trees but are other crops out there better? On this program, special correspondent Terry Yen talks about the promise of anthropogenic peat.
Keywords: science; greenhouse gas emissions; peat; carbon
|Nano nano -- Groks Science Show 09-10-14 - Charles Lee and Frank Ling|
Bulk carbon comes in many different forms from pencil lead to diamonds. At the nanoscopic level, the properties become even more exotic. On this program, Hari Manoharan talks about what happens when nanostructures of carbon are combined.
Keywords: buckyballs; carbon; graphene; diamonds; nanotechnology; diodes; LED
|The Age of Ivory -- Groks Science Show 2013-07-03 - Forrest Gulden, Charles Lee|
Less than a half a million African elephants live in the wild and more than 25,000 of those are poached every year. They are poached for their ivory even though African ivory collected after 1989 is generally illegal. One reason such robust poaching persists is that, until recently, there has been no way to determine when ivory was collected. Dr. Kevin Uno joins us to discuss his recent PNAS article detailing a test that closes this loophole...
Keywords: Groks; elephants; carbon; isotopes; C13; C14; C12; ecology; conservation; Kevin Uno; Lamont Doherty; Earth Observatory; ivory